This change has the unintended effect of neutering the Xubuntu session (i.e. XDG_CONFIG_DIRS doesn't get set, so you get a "stock" Xfce desktop) when xdm is used, because there is no equivalent of 60xdg_path-on-session then. I've filed bug 583634 on this.
This change has the unintended effect of neutering the Xubuntu session (i.e. XDG_CONFIG_DIRS doesn't get set, so you get a "stock" Xfce desktop) when xdm is used, because there is no equivalent of 60xdg_path- on-session then. I've filed bug 583634 on this.